Senior Software Engineer I (Java & JavaScript)

Elsevier; Greater London; On-site; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Comprehensive Pension Plan

Generous vacation entitlement and sabb

Maternity, Paternity, Adoption and...

Personal Choice budget

Internal communities and networks

Employee discounts

Recruitment introduction reward

Employee Assistance Program (global)

Job summary

Elsevier is seeking a Senior Software Engineer I to design and implement scalable Java and JavaScript applications. You will join the Identity & Access Management team, contributing to authentication and authorisation infrastructure on AWS ECS and EKS.

Expect challenging research, design, mentoring, and collaboration with product and customers to translate requirements into robust software. The role involves developing across components, guiding junior engineers, and delivering high-performance

Qualifications

• Experience with Java/J2EE, JavaScript, and modern web stacks.
• Proficient in data manipulation and SQL.
• Familiarity with CI/CD, test-driven development, and code reviews.

Responsibilities

• Collaborate across squads to finalize requirements and design components.
• Develop and review complex system components across multiple layers.
• Guide junior engineers and participate in CI/CD automation and deployment.

Skills

Java/J2EE

JavaScript

Node.js

React

SQL

XML

HTML

JSP

Data modelling

CI/CD

Testing

Tools

Docker

Kubernetes

Keycloak

Auth0

Terraform

AWS

ECS

EKS

Job description

Senior Software Engineer I (Java & JavaScript)

Do you enjoy designing and developing scalable, high-performance applications using Java and JavaScript?

About the team

You will join the Identity & Access Management team, which owns the authentication and authorisation infrastructure underpinning Elsevier's global product suite. We build and operate a highly available identity platform that integrates with multiple identity providers, entitlement services, and downstream APIs, running on AWS ECS and EKS.

About the role

This position is performed by an experienced professional and will undertake difficult research, design, and software development assignments within a software functional area or product line, and provides direct input to project plans, schedules, and methodology in the development of cross-functional software products under the guidance of more senior members of the squad. This position performs software design - typically across multiple components; develops the skills of mentoring more junior members of the team and works with others to talk to users/customers and translates their requests into solutions.

Key Responsibilities

• Interface with other technical personnel or team members to finalize requirements


• Write and review portions of detailed specifications for the development of complex system components


• Complete complex bug fixes


• Implement and guides other to continuous integration, delivery, and deployment software delivery practices


• Identifies operational requirements for logging, instrumentation, and alerting and works with Senior II to ensure operational requirements are met


• Proficient in implementing continuous integration, delivery, and deployment software delivery practices


• Aware of operational requirements and implementation for logging, instrumentation, and alerting


• Work closely with other development team members to understand product complex requirements and translate them into software designs.


• Successfully implement development processes, coding best practices, and code reviews


• Operate in various development environments (Agile, Waterfall, etc.) while collaborating with key stakeholders


• Resolve complex intermediate technical issues as necessary


• Pair Programming with squad members to support the learning and development of others


• Develop skills to mentor less senior software developers on development methodologies and optimization techniques

Requirements

• Knowledge of software development methodologies (e.g., Agile, Waterfall)


• Intermediate proficiency with data manipulation language, including optimization techniques


• Intermediate understanding of normalized/dimensional data modelling principles


• Intermediate knowledge of multiple data storage subsystems


• Confident practitioner in development languages including but not limited to: Java/J2EE, JavaScript, JSP, HTML, Node.js, React, XML, SQL, Windows, Unix.


• Experience with Keycloak, Auth0, or another identity provider, including realm configuration, authentication flows, and OIDC client setup.


• Proficient research skills


• Developing knowledge in Industry best practices in development


• Knowledge in using and developing in applicable toolsets


• Ability to interface competently with other technical personnel or team members to finalize requirements


• Ability to work well with internal and external technology resources


• Knowledge of test-driven development


• Ability to write and review portions of detailed specifications for the development of complex system components


• Ability to complete complex bug fixes


• Good oral and written communication skills


• Good to Have Experience using AI-assisted development tools, such as Claude, GitHub Copilot, or Codex, for test authoring, stub generation, coverage analysis, or test-output investigation.


• Experience treating AI-assisted tools as productivity accelerators within a quality engineering workflow while maintaining appropriate review and validation practices.


• Familiarity with Keycloak or another identity provider, including realm configuration, authentication flows, and OIDC client setup.


• Experience with Terraform or another infrastructure-as-code tool, including the ability to read infrastructure definitions and understand how configuration changes affect system behaviour and test coverage.


• Experience working with Docker and Kubernetes.

Why Join Us?

Join our team and contribute to a culture of innovation, collaboration, and excellence. If you are ready to advance your career and make a significant impact, we encourage you to apply.

Work in a way that works for you We promote a healthy work/life balance across the organization. We offer an appealing working prospect for our people. With numerous wellbeing initiatives, shared parental leave, study assistance and sabbaticals, we will help you meet your immediate responsibilities and your long-term goals.

Working flexible hours - flexing the times when you work in the day to help you fit everything in and work when you are the most productive.

Working for you We know that your well-being and happiness are key to a long and successful career.

These are some of the benefits we are delighted to offer:

• Comprehensive Pension Plan


• Generous vacation entitlement and option for sabbatical leave


• Maternity, Paternity, Adoption and Family Care leave


• Personal Choice budget


• Internal communities and networks


• Various employee discounts


• Recruitment introduction reward


• Employee Assistance Program (global)

About the business- A global leader in information and analytics, we help researchers and healthcare professionals advance science and improve health outcomes for the benefit of society. Building on our publishing heritage, we combine quality information and vast data sets with analytics to support visionary science and research, health education and interactive learning, as well as exceptional healthcare and clinical practice. At Elsevier, your work contributes to the world’s grand challenges and a more sustainable future. We harness innovative technologies to support science and healthcare to partner for a better world. We know your well-being and happiness are key to a long and successful career. We are delighted to offer country specific benefits.

If you have a disability or other need that requires accommodation or adjustment, please let us know by completing our Applicant Request Support Form or please contact 1-855-833-5120.

We are an equal opportunity employer: qualified applicants are considered for and treated during employment without regard to race, color, creed, religion, sex, national origin, citizenship status, disability status, protected veteran status, age, marital status, sexual orientation, gender identity, genetic information, or any other characteristic protected by law. USA Job Seekers: EEO Know Your Rights.

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